Keyboard



FIG. 1 is a front top and left side perspective view of a keyboard showing my new design;

FIG. 2 is a rear, bottom and left side perspective view thereof;

FIG. 3 is a top plan view thereof on an enlarged scale;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a keyboard, as shown and described. 